Phonograph-motor



A. ROEIVIER.

PHONOGRAPH MOTOR.

APPLICATION FILED MAYIQ. 1919.

Patented June 15, 1920.

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A. ROEMER.

PHoNoGRAPH Moon. APPLICATIUN FILED MA4Y19, 1919 provided for the spring barrel 8, which lat- UNITED STATES PATENT OFFICE.B

ARTHUR ROEMER, OF CHICAG, ILLINOIS, ASSIGNOR TO ROEMER MANUFACTURING COMPANY, A. CORPORATION 0F ILLINOIS.

rrIoNoGnnrIi-Moron.

Application filed May 19, 1319.

To all whom t may concern.'

Be it known that I, ARTHUR Romina, a citizen of the United States of America, and a resident of Chicago, Illinois, have invented a certain new and useful Improvement in Phonograph-Motors, of which the following is a specification.

This invention relates to motors, and more particularly to spring motors, and more especially to those employed in phonographs or talking machines.

Objects of the invention are to provide a novel and improved construction for the casing or body frame of the motor, which will facilitate the insertion of the mechanical lparts therein, as well as their removal therefrom, and which will also insure proper and sufficient protection for the mechanism of the motor, without making the motor unnecessarily heavy; to provide an improved construction whereby the gearing or transmission between the spring barrel and the turn-table post is more satisfactorily mounted and arranged than heretofore; to provide an improved constructionv whereby the turn-table post is easily adjustable to take up wear, thereby to prevent the post from wabbling or shifting laterally while rotating; and to provide an improved construction whereby the governor of the motor is protected against breakage, but is at the same time accessible for purposes of repair or adjustment.

To these and other useful ends the invention consists in matters hereinafter set forth and claimed, and shown in the accompanying drawings in which- Figure 1 is a bottom plan of a talking machine motor embodying the principles of the invention.

Fig. 2 is an endelevation of said motor, showing the same right side up.

- Fig. 3 is ay vertical section on line 3-3 in Fig. 1, showing the motor right side up.

Fig. 4 is a side elevation of said motor in the position in which it operates in the talking machine or phonograph.

As thus illustrated, the casing or body frame of the motor comprises a bottom wall 1 cast integral with the sidewalls 3 and 4l, it being observed that the wall 3 stops short at 5, while the wall 4i extends around to the point 6, being curved around the chamber 7 Specification of Letters Patent. Patented June 15, 1920.

Serial No. 298,075.

ter is of the usual or any suitable character, and contains the springs for driving the motor in the usual or well known manner. This construction leaves one side of the spring barrel chamber open from 5 to 6, and this opening is closed by a curved plate 9 secured to the body frame'by screws 10, or in any other suitable manner. The circularplate or disk 11 is secured by screws 12 to the top of the body frame, and a vertical post or axle 13 is disposed centrally of the spring barrel chamber 7 and forms the axis for said spring barrel, the upper and lower ends of this post or axis member 18 being preferably mounted in the top and bottom walls 1 and 1a of the body frame, and slightly riveted over at its upper and lower ends to prevent displacement thereof. The lower side of the spring barrel has a worm gear 15 which engages the worm 16 on the winding shaft 17, theV latter having a ratchet device 18, of the usual character, to prevent the shaft from rotating backwardafter the spring is wound up by the application of a crankhandle to the outer end of the shaft, in the usual and well known manner'. rlfhe springs in the barrel drive a large gear wheel 19 at the top of the spring barrel, and this in turn drives a pinion 20 which is rigid with the sleeve 21, and the latter being mounted vertically to rotate on the rod 22 which is inserted downwardly through the bearing portions 23 and 24 formed in the top and bottom walls of the body1 frame. The sleeve 21 has alarge gear wheel 25 at its lower end which engages a pinion 26 on the lower end portion of the vertically disposed' turn-table shaft 27, the lower end of the latter being supported by a step bearing formed by a ball 28, or in any suitable manner. rThe upper portion of the turn-table post is tapered at 29 to fit a tapered opening 3() correspondingly formed in the top wall 14 of the body frame, and the ball 28 is supported on the upper end of a screw 31 inserted upwardly through the lower wall 1 of the body frame, whereby this step bearing for the lower end of the turn-table post can be raised and lowered at will. A locknut 32 is screwed upon the lower end of the screw 31, thereby to lock the latter in adjusted position. A worm wheel is carried by the turn-table post, and engages a worm 3-1 on the governor shaft 35 which carries the governor mechanism 3G, the latter being of any suitable or well known character, and employed to prevent themotor from operating at too high a speed, in the usual and well known manner. For the purpose' of protecting the governor the body frame is provided with projecting arms 37, which are exten.-Y

sions of the walls and d, near the top of the motor, and these arms are connected by a bar or short rod 38 which is disposed in such position that the governor', which is usually of more 4or less delicate construction, is not liable to be struck by other objects, particularly during the handling of the motor and its shipment before its incorporation oi' installation in the box oi body of the phonograph or talkingmachine.

Some of the advantages of the foregoing are as follows: The spring barrel is inclosed and thoroughly protected7 and in assembling the parts of the motor the spring i barrel is first shifted into place, before the cover 9 is secured in position, and the post or axis lmember 13 is then inserted and riveted over at its ends, and the cover is l then secured to the body by the screwsv l() as previously described.y The other parts are easily inserted inplace, and whenentirelyassembled, the motor is strong and compact, and at the same time of minimum weight. The intermediate transmission or gearing interposed between the driving gear V19' and the pinion 26 of the rotary'turntable post, is effectively held in position by the pin or rod 22, this rod being preferably rotatable in the bearings 23 and 2s, and the sleever2l being rotatable on said rod. ln this way, the rod and sleeve can turn together, but if the rod binds within its bearings, then the sleev can turn on the rod, and the result is that the power-transinitting connection nuns smoothly and with' comparatively little friction, As the turntable post 2'? is tapered above the portion 29, it lan be insertedupwardly through the bearing opening SOin the frame,` until its Vlower end is high enoughl to swii'ig in over the lower wall l, and afterward the gever# nor shaft and governor are placed in posi? tion. When the bearing lopening 30 becomes worn, so that the post 27 is little loose, the screw 3l can be tightened up to raise the post, thus tightening the beveled or tapered portion 29 of the post in said bearing openin at least sufliciently to enp able the postte rotate without waobling or shifting sidewise in said opening. removing the plate ll the pin or rod 22 can be pulled upwardly, and in this way the iiitermediate transmission gearing can be vremoved, when such is necessary o'r desirable. Also,- by simply trimming olf the slight edge formed by upsetting the ends of the post 13,- the latter can be removed when necessary, thus permitting` the spring Vbarrel to cess to the governor and to the gearing, in

manner that will be readily understood.

If desired, the body frame can be provided with an opening'39 in the bottom wall thereof, to accommodate the worm 16 through which the power is supplied to wind up the prings Also,n the bottom wall l can be provided with a notch 40 in its end edge, adjacent the step bearin for theY lower end of the turn-table post 2r, thereby tov facilitate the insertion'of the latter inthe frame and into position; p y

As shown, the bearing opening 30 for the turn table post engages only the upper portion of the taper 29, and the lower end of the post is supported above the upper surface of the bottom wall of the cast body fame. Also, the middle portion of the post 27 is cylindiic and larger in diameter than the upper and lower ends of the post, and largerrin diameter than any other portion of the post, whereby the gear 33 can be re moved vfrom either end of the post.V VInasT much as the post is tapered,"above 'the bevel oi taper 29, thelowei'ing of the post 'by adjustment of the screwV 31 will permit the removal of the post, by swinging its lower end outwardly, in a manner thatY will be readily understood. It will 'also be seen that the rod 22 does-not' support thevweight of the sleeve 2l, inasmuch as the bodyv frame vthe latter-thatis tosay, notwithstanding the factltliat said body frame is east integral in onepiece.n y lV hat claim as my inventionVK is n l. 'In a motor, a body frameV composed of upper and lower'and side walls' cast -in'` tegrally, forming a partially inclosed lchamber having an opening at oneside thereof,

acurved plate forming a closure foi' said opening, a spring barrel which is insertiblethrough said opening before saidV cover plate is applied, a turn-table post supported in position bysaid body frame, gearing for connecting` said spring vbarrel with said turn table post, and means forV winding the ino-.

2. A` structureas specifiedV in claim 1,1 one side wall terminating at 5, and the other Cri side wall having a portion which is curved about the axis of said spring barrel, and which terminates at 6, said cover plate being also curved about said axis and extending between said edges 5 and 6 of the side walls. A

In a motor, a body frame, a spring barrel, a rotary turn-table post, and gear ing between said spring barrel and said turntable post. said 'gearing comprising a sleeve disposed a distance from said post and arranged parallel therewith and having one end thereof geared'to the spring barrel, and having its other end geared to the turn-table post, a rod extending through said sleeve and having its opposite ends re! movably supported in said body frame, and means on the frame to hold the sleeve against endwise displacement, thereby to prevent the weight of the sleeve from being imposed on said rod.

4. A structure as specified in claim 3, said body frame having top and bottom walls be tween which said sleeve is disposed in upright position, providing said means to hold the sleeve against displacement, and said rod being removable endwise to permit removal of said sleeve from the motor.

5. A structure as specied in claim 3, said rod being mounted to rotate in bearings thereof on said body frame.

6. In a motoi, .a body frame, a turntable post provided with a tapered upper portion, said body frame having a tapered opening in Vwhich said tapered portion of the post is rotatable, the edges of said opening engaging only the upper portion of the taper on the post, and an adjustable step bearing for the lower end of the post, adjustment of the step bearing serving to raise the tapered portion of the post in said tapered opening, thereby to take up wear between the post and the edges of said opening, the middle portion of the post being cylindric and larger in diameter than any other portion of the post, and a driving gear on this middle portion, so that the torque of the post is on the greatest diameter thereof.

7. A structure as specified in claim 6, said step bearing comprising al ball which engages the lower end of the post, and a ver tically adjustable screw which supports said ball, so that thelower end of said post is above the upper surface of the lower wall of said frame, and whereby the lower' end of the post can be freed to swing outward by lowering the step bearing.

8. A structure as specified in claim 6, said post being tapered also above said bearing, thereby to facilitate insertion and removal of the post, by tilting it around one way or another, substantially as described.

9. In a motor, a rotary turn-table post, a body frame having means for supporting the post in vertical position, a governor for said post, said governor being disposed at the outer side of said post in position to4 'zontal member fixed at its ends in the end portions of said arms.

11. InA a phonograph spring motor, the combination of a vertically disposed turntable post, a body frame having an upper wall provided with an opening to form a bearing for the said post, the upper portion of said post being shaped to permit insertion thereof through said opening, by inserting the post upwardly in tilted position, said body frame having a lower wall inA tegrally connected with said upper wall, with means on said lower wall to supporta the lower end of the post, and said frame being shaped to permit the insertion and removal of the post by tilting movement thereof in said opening.

12. In a phonograph spring motor, the combination of a turn-table post, a spring barrel, and gearing between the driving spring and the turn-table post, said gearing comprising a rotary sleeve having gear wheels at opposite ends thereof, a member extending through said sleeve to form the axis of rotation thereof, and means whereby said member is free to rotate with the sleeve, the sleeve being also rotatable on said member, and means to support the sleeve and prevent the weight thereof from being imposed on said member.

sie4

13. In a phonograph spring motor, the

combination of a one-piece cast body frame having a chamber therein, a spring barrel disposed in said chamber, removable means forming a vertical axis for said barrel, a turn-table post supported by said body frame, gearing to connect the driving spring with said post, the body frame having an opening through which the spring barrel is insertible or removable, before insertion or after removal of the means forming said axis, and means to close said opening.

14. In a phonograph motor, the combination of a one-piece cast body frame, a spring barrel, and means including a vertical axis member for holding said barrel in place and whereby the barrel is insertible into and removable from the said one-piece body frame.

15. In a phonograph motor, the combination of one-piece cast body frame, a solid one-piece turnetable post, and means whereby the post 1s lnsertlble into and removable lfrom the said one-piece body frame.

v16. In a phonograph motor, the combination of a one-piece oas't b ody frame, a spring barrel, va vertical axis member for said barrel, a turn-table post, a Counter-shaft ntertop Vand bottom walls and Aside walls, a spring barrel andmeans whereby the barrelV is Vnsertible into and removable from said body framefa solid, one-pieee turntable post and means whereby the post is insertible into and. removable Vfrom said body frame, and a counter-shaft. interme diate the spring barrel and turn-table post and means including a vertical axis member whereby the shaft is held in place and is insertible into and removable from said body frame.

ARTHUR ROEMILR` 

